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Keyword: tsunami

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  • Preliminary evidence for a 1000-year-old tsunami in the South China Sea

    01/05/2019 2:47:53 AM PST · by SunkenCiv · 14 replies
    Nature ^ | April 2013 | Liguang Sun et al
    Here we report preliminary evidence from Xisha Islands in the South China Sea for a large tsunami around AD 1024. Sand layers in lake sediment cores and their geochemical characteristics indicate a sudden deposition event around AD 1024, temporally consistent with a written record of a disastrous event characterized by high waves in AD 1076. Heavy coral and shell fossils, which are older than AD 1024, deposited more than 200 meters into the island, further support the occurrence of a high-energy event such as a tsunami or an unusually large storm. Our results underscore the importance of acknowledging and understanding the...
  • The Nippon Foundation-GEBCO Seabed 2030 Project

    12/30/2018 2:55:15 AM PST · by SunkenCiv · 10 replies
    Seabed 2030 Project ^ | October 2018 | unattributed
  • Scientist Confirm the Largest Wave Ever Recorded (Over 62 Feet)

    12/16/2016 2:46:54 PM PST · by nickcarraway · 48 replies
    Popular Mechanics ^ | Dec 15, 2016 | David Grossman
    A six-story building rising and falling in the ocean. The World Meteorological Organization (WMO) has announced that in 2013, a buoy detected the "the highest significant wave height" in recorded history. At a little over 62 feet, the North Atlantic wave was the size of a six-story building. Using a Datawell heave sensor, the WMO used careful language to describe the discovery. "Significant wave height" refers to the average height in a series of large waves, and "is comparable to what an observer would see as an average of about 15-20 well-formed waves over a period of about 10 minutes,"...
  • Bermuda Triangle Discovery: Has the Mystery Finally Been Solved?

    03/15/2016 12:48:13 PM PDT · by nickcarraway · 42 replies
    KFOR ^ | MARCH 15, 2016
    A new discovery has revived an old theory about ocean water gobbling up ships in the Bermuda Triangle—if, that is, the Bermuda Triangle even exists. Researchers from the Arctic University of Norway say they’ve spotted large craters apparently created by methane buildups off Norway’s coast, Atlas Obscura reports. “Multiple giant craters exist on the sea floor in an area in the west-central Barents Sea … and are probably a cause of enormous blowouts of gas,” they tell the Sunday Times. “The crater area is likely to represent one of the largest hotspots for shallow marine methane release in the Arctic.”...
  • Killer waves caused panic on cruise ship

    03/04/2010 2:49:20 PM PST · by BuckeyeTexan · 30 replies · 1,712+ views
    AFP ^ | 03/04/2010 | AFP
    BARCELONA, Spain — Terrified passengers told Thursday how three giant rogue waves smashed through the front windows of a Mediterranean cruise ship killing two people and causing mass panic on the liner. The eight-metre (26-foot) high waves injured another 14 people, including one woman in "very serious condition" in hospital. Most of the 1,300 tourists were being repatriated from the Mv Louis Majesty to their home countries on Thursday. "It was a monster wave... it smashed all the windows. Everything happened so quickly," German passenger Margrit Woffe-Ternes told Spanish public television. Images filmed by a passenger showed screaming people fleeing...
  • 26-foot wave strikes cruise ship, killing 2

    03/03/2010 2:44:03 PM PST · by OldDeckHand · 38 replies · 2,040+ views
    AP via ^ | 03/03/10 | Staff
    ATHENS, Greece - A 26-foot wave crashed into a cruise ship carrying nearly 2,000 people off the coast of France, smashing windshields and killing two people, Greek and Cypriot said Wednesday. A Greek coast guard statement says another six people suffered light injuries on board the Cypriot-owned Louis Majesty. In a statement, the cruise line said its Maltese ship was hit by "abnormal waves."
  • Mystery waves hit Maine

    11/04/2008 4:39:01 AM PST · by GQuagmire · 63 replies · 6,661+ views ^ | November 4, 2008 | Megan Woolhouse
    Dockworker Marcy Ingall saw a giant wave in the distance last Tuesday afternoon and stopped in her tracks. It was an hour before low tide in Maine's Boothbay Harbor, yet without warning, the muddy harbor floor suddenly filled with rushing, swirling water. Squall-line surges and rogue waves In 15 minutes, the water rose 12 feet, then receded. And then it happened again. It occurred three times, she said, each time ripping apart docks and splitting wooden pilings.
  • Secret to Towering Rogue Waves Revealed (waves can amplify instead of dissipating)

    08/04/2008 10:23:27 PM PDT · by TigerLikesRooster · 34 replies · 799+ views
    Live Science ^ | 08/04/08 | Charles Q. Choi
    Secret to Towering Rogue Waves Revealed Charles Q. Choi Special to LiveScience Mon Aug 4, 11:41 AM ET Deadly rogue waves 100 feet tall or higher could suddenly rise seemingly out of nowhere from the ocean, research now reveals. Understanding how such monstrous waves form could lead to ways to predict when they might emerge or, potentially, even drive them at enemy vessels, scientists added. For centuries these killer waves had been dismissed as myths - towering walls of water blamed for mysterious disappearances of ships. But on New Year's Day on 1995, a wave that reached more than...
  • Huge ocean wave towered nearly 100 feet

    08/06/2005 8:41:23 AM PDT · by nuconvert · 13 replies · 1,240+ views
    AP ^ | Aug. 4, 2005
    Huge ocean wave towered nearly 100 feet Study finds giant waves are more common than first thought The Associated Press Aug. 4, 2005 WASHINGTON - Last year's Hurricane Ivan generated an ocean wave that towered higher than 90 feet at one point, says a study that also suggests such giants may be more common than once thought. Research indicates these are not "rogue waves but actually fairly common during hurricanes," said David Wang of the Naval Research Laboratory at Stennis Space Center, Miss. The giant wave was detected 75 miles south of Gulfport, Miss., by instruments on the ocean floor...
  • Hurricane Ivan, Largest Wave Ever Measured

    06/17/2005 8:41:18 AM PDT · by blam · 101 replies · 6,310+ views
    Science News Magazine ^ | 6-11-2005 | Sid Perkins
    . . . and churn up big waves, too Sid Perkins From New Orleans, at the Joint Assembly of the American Geophysical Union As Hurricane Ivan approached the U.S. Gulf Coast last September, it passed right over an array of seafloor sensors. The network detected the largest wave ever measured by instruments—one that towered more than 27 meters from trough to crest. The 50-kilometer-wide group of 14 instruments was deployed in May 2004 to measure currents on the ocean floor, says William J. Teague, an oceanographer at the Naval Research Laboratory at Bay St. Louis, Miss. Late on the evening...
  • Ivan's Rogue Wave Hits Energy Infrastructure

    10/18/2004 9:53:33 AM PDT · by Mr. Jeeves · 8 replies · 573+ views
    Dow Jones Newswire ^ | 10/11/04 | Spencer Jakab
    Ivan's Massive Waves Caught Energy Industry Off Guard NEW YORK (Dow Jones)--Waves and storm surges that were more massive than previously thought may explain why Hurricane Ivan did such severe damage to the platforms and pipelines in its path. Chris Oynes, regional director for the U.S. Minerals Management Service, said preliminary data from the government's National Oceanic and Atmospheric Administration show the central Gulf of Mexico was hit by mammoth waves - including perhaps the tallest ever recorded in the Gulf - that exceeded the design requirements of the area's infrastructure. "There were some extremely large waves," he said...
  • National Data Buoy Center, NWS link

    09/15/2004 1:04:38 PM PDT · by Lokibob · 7 replies · 844+ views
    National Data Buoy Center ^ | 15 Sep 2004 | National Weather Service
    National Data Buoy Center, NWS link       Station 42040 - MOBILE SOUTH 64 nm South of Dauphin Island, AL     50.5   Wind speed    62.2  Peak gust   42.0  Wave height   You can watch the weather in the 10 nearest buoys to Ivan:      
  • Dashing Rogues (Freak Waves)

    11/18/2006 4:13:28 PM PST · by blam · 15 replies · 1,295+ views
    Science News Magazine ^ | 11-18-2006 | Sid Perkins
    Dashing RoguesFreak ocean waves pose threat to ships, deep-sea oil platforms Sid Perkins In February 1933, the Navy tanker USS Ramapo was steaming its way from the Philippines to San Diego in the midst of an exceptionally strong storm. The 146-meter-long ship was buffeted by near-hurricane–force winds. Early on the morning of Feb. 7, a wave far larger than the others surrounding the ship overtook the Ramapo from behind. New mathematical analyses, backed up by satellite data, hint that dangerous rogue waves are more common than scientists previously recognized. In this archive photo from the National Weather Service, a merchant...
  • Hurricane caused 'tallest wave' ~~ Ivan may have had waves more than 90 foot high

    08/04/2005 9:38:50 PM PDT · by Ernest_at_the_Beach · 19 replies · 2,190+ views
    BBC ^ | Friday, 5 August 2005, 02:20 GMT 03:20 UK | staff
    Hurricane caused 'tallest wave' Satellite image of Hurricane Ivan south of western Cuba Hurricane Ivan generated a wave more than 90 foot (27 metres) high - thought to be the tallest and most intense ever measured - scientists have revealed.It would have dwarfed a 10-storey building and had the power to snap a ship in half - but never reached land. The wave was recorded by sensors on the ocean floor as Hurricane Ivan passed over the Gulf of Mexico last September. The observations suggest prior estimates for extreme waves are too low, researchers warn in Science. Hurricane Ivan...
  • Exploring The Ocean Basins With Satellite Altimeter Data

    03/28/2005 10:10:48 AM PST · by SunkenCiv · 7 replies · 586+ views
    National Geophysical Data Center, National Oceanic and Atmospheric Administration ^ | Tue Nov 25 2004 (apparently) | David T. Sandwell and Walter H. F. Smith
    The reason that the ocean floor, especially the southern hemisphere oceans, is so poorly charted is that electromagnetic waves cannot penetrate the deep ocean (3-5 km = 2-3 mi). Instead, depths are commonly measured by timing the two-way travel time of an acoustic pulse. However because research vessels travel quite slowly (6m/s = 12 knots) it would take approximately 125 years to chart the ocean basins using the latest swath-mapping tools. To date, only a small fraction of the sea floor has been charted by ships. Fortunately, such a major mapping program is largely unnecessary because the ocean surface has...
  • Satellite survey washes away wave theory

    07/24/2004 9:26:58 PM PDT · by playball0 · 38 replies · 1,120+ views
    ABC Online ^ | 7/25/04 | ABC Online
    It appears that massive ship-sinking ocean waves - as high as 10-storey buildings - are far more common than scientists previously thought. Oceanographers' conventional wisdom was that waves over 25 metres only occurred once every 10,000 years. However, the European Space Agency says satellite data it collected over only three weeks in 2001 found more than 10 individual waves around the globe that swelled to more than 25 metres in height. The news is significant because current ships and off-shore platforms are only built to withstand maximum wave heights of 15 metres. Over the past two decades more than 200...
  • 'Rogue waves' reported by mariners get scientific backing

    07/23/2004 1:25:25 AM PDT · by Rebelbase · 22 replies · 1,312+ views
    yahoo news ^ | 7/21/04 | unknown
    PARIS (AFP) - European satellites have given confirmation to terrified mariners who describe seeing freak waves as tall as 10-storey buildings, the European Space Agency (ESA) said. "Rogue waves" have been the anecdotal cause behind scores of sinkings of vessels as large as container ships and supertankers over the past two decades. But evidence to support this has been sketchy, and many marine scientists have clung to statistical models that say monstrous deviations from the normal sea state only occur once every thousand years. Testing this promise, ESA tasked two of its Earth-scanning satellites, ERS-1 and ERS-2, to monitor the...
  • Ship-sinking monster waves revealed by ESA satellites

    07/22/2004 10:25:27 PM PDT · by uglybiker · 60 replies · 4,079+ views
    Rare photo of a rogue wave Ship-sinking monster waves revealed by ESA satellites 21 July 2004Once dismissed as a nautical myth, freakish ocean waves that rise as tall as ten-storey apartment blocks have been accepted as a leading cause of large ship sinkings. Results from ESA's ERS satellites helped establish the widespread existence of these 'rogue' waves and are now being used to study their origins.   Severe weather has sunk more than 200 supertankers and container ships exceeding 200 metres in length during the last two decades. Rogue waves are believed to be the major cause in many such...

    05/22/2017 12:55:11 PM PDT · by C19fan · 48 replies
    Met Ocean Solutions ^ | May 20, 2017 | Staff
    Earlier today, MetOcean Solutions' wave buoy in the Southern Ocean recorded a whopping 19.4 m wave. Senior Oceanographer Dr Tom Durrant is thrilled. "This is one of the largest waves recorded in the Southern Hemisphere," he explains. "This is the world's southern-most wave buoy moored in the open ocean, and we are excited to put it to the test in large seas."
  • Lightning Bolts appear above volcano in Chile + Etna volcano rumbles back to life in Sicily

    05/13/2008 9:23:41 AM PDT · by NYer · 88 replies · 453+ views
    Yahoo News and AFP ^ | May 10, 2008
    Lightning bolts appear above and around the Chaiten volcano as seen from Chana, some 30 kms (19 miles) north of the volcano, as it began its first eruption in thousands of years, in southern Chile May 2, 2008. Cases of electrical storms breaking out directly above erupting volcanos are well documented, although scientists differ on what causes them. Picture taken May 2, 2008. REUTERS/Carlos Gutierrez (CHILE) The Etna volcano in Sicily rumbled back to life on Tuesday with a "seismic event" followed by a burst of ash, volcanologists said three days after minor eruptions shook the cone. A "seismic...